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Finding the Fourth Proportional to 160,644.72, 240,917.27 and 128,980.20

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Solution

The fourth proportional to 160,644.72, 240,917.27 and 128,980.20 is: 193,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,644.72 : 240,917.27 = 128,980.20 : x
  2. Step 2: Convert to fraction form
    160,644.72/240,917.27 = 128,980.20/x
  3. Step 3: Cross multiply
    160,644.72x = 240,917.27 × 128,980.20
  4. Step 4: Simplify right side
    160,644.72x = 31,073,557,023.15
  5. Step 5: Solve for x
    x = 31,073,557,023.15/160,644.72
  6. Step 6: Final answer
    x = 193,430.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.